EP0809563B1 - Dispositif mobile melangeur et distributeur a beton - Google Patents

Dispositif mobile melangeur et distributeur a beton Download PDF

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Publication number
EP0809563B1
EP0809563B1 EP95936886A EP95936886A EP0809563B1 EP 0809563 B1 EP0809563 B1 EP 0809563B1 EP 95936886 A EP95936886 A EP 95936886A EP 95936886 A EP95936886 A EP 95936886A EP 0809563 B1 EP0809563 B1 EP 0809563B1
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EP
European Patent Office
Prior art keywords
mixing
mobile apparatus
dispensing
mixer
ingredients
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95936886A
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German (de)
English (en)
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EP0809563A1 (fr
EP0809563A4 (fr
Inventor
Robert William Cairns
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Individual
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Individual
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Publication of EP0809563A4 publication Critical patent/EP0809563A4/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4282—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport with moving mixing tools in a stationary container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/0481—Plant for proportioning, supplying or batching
    • B28C7/0486—Plant for proportioning, supplying or batching the plant being mobile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C9/00—General arrangement or layout of plant
    • B28C9/04—General arrangement or layout of plant the plant being mobile, e.g. mounted on a carriage or a set of carriages
    • B28C9/0454—Self-contained units, i.e. mobile plants having storage containers for the ingredients
    • B28C9/0463—Self-contained units, i.e. mobile plants having storage containers for the ingredients with a mixing discharge trough with a free end, e.g. provided with a mixing screw or pivotable about a vertical or horizontal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/051—Stirrers characterised by their elements, materials or mechanical properties
    • B01F27/053—Stirrers characterised by their elements, materials or mechanical properties characterised by their materials

Definitions

  • This invention is concerned with a mobile batching and mixing apparatus for mixtures of ingredients such as concrete, cement mortars, road base materials, asphaltic road surfacing compounds, animal feedstuffs and the like and also for transportation of particulate materials.
  • the most commonly employed apparatus for mixing and transportation of pre-mixed concrete and the like comprises a vehicle mounted agitator bowl which receives the ingredients for a concrete mix from a stationary batching plant and, by rotation of the agitator bowl, mixes the concrete mixture prior to and during transit to a discharge site.
  • the carrying capacity of larger agitator bowl mixers is usually maximised to carry a pre-mixed batch of about 6.4 cubic metres of concrete.
  • agitator bowl mixers may be employed to deliver batches of, say, 0.40 to 2.2 cubic metres.
  • Australian Patent Application No. 27574/88 describes a mobile batching/mixing apparatus comprising a plurality of hoppers, each with a respective metering means for discharging dry ingredients onto a conveyor belt located below the hoppers.
  • the conveyor belt delivers proportioned quantities of dry ingredients to an elevatable batch mixer in the form of a paddle mixer which is tiltable, in an elevated position, to discharge the contents thereof.
  • United States Patent Nos. 5624577 and 4538916 describe highly sophisticated, purpose built vehicles which operate as mobile batching and mixing apparatuses to deliver variable quantities of pre-mixed concrete as required.
  • Australian Patents Nos. 575263 and 590101 describe a mobile batching and mixing apparatus which is located at the rear end of a vehicle having a tipping body.
  • the apparatus which is removably located in the tipping body to release the vehicle for other uses, comprises containers for water and cement powder and a plurality of metering devices for the various components of a concrete mix or the like. Bulk sand and aggregate is fed to respective metering devices under the influence of gravity when the tipping body is raised.
  • Partial mixing of the dry ingredients is achieved by simultaneous metering into the feed hopper of a mixing and discharge conveyor in the form of a screw auger located in a tubular housing
  • the dry ingredients and water are introduced at one end of the auger housing and mixing and discharge occurs as a continuous operation.
  • a particular disadvantage associated with the apparatus of Australian Patents Nos 575263 and 590101 is that the hopper of the mixing and discharge conveyor must be centrally located below the outlets of the gravity fed metering devices. Accordingly the pivotally mounted inner end of the screw auger is lowered close to the ground surface as the vehicle body tips to feed the metering apparatus.
  • the screw auger is of extended length which extends well above the upper portion of the vehicle body when the auger is in an upright travelling position.
  • a further disadvantage of this apparatus is that the drive motor for the auger screw is necessarily located at the outer or free end of the auger to avoid contact with the ground surface and consequent damage when the vehicle body is elevated to the required tipping position.
  • the placement of the drive motor at free end of the auger shaft in turn necessitates a discharge opening in the auger body adjacent the free end thereof on an under surface.
  • United Kingdom Patent GB-A-1165551 discloses a mixer for concrete, mortar or the like in the form of a hopper-bodied wheeled vehicle having a plurality of downwardly-opening discharge apertures, each having an individual sliding door controlling the aperture.
  • a belt conveyor is disposed beneath the discharge apertures and conveys dry-mixed material from each aperture in turn as the sliding doors are successively opened.
  • the apparatus may further comprise one or more container means for containing ingredients of a mixture; and metering means associated with said one or more container means.
  • container means, metering means and conveyor means may be mounted on a transport vehicle such as a truck or lorry.
  • At least one of said container means comprises a hopper for particulate material.
  • the hopper may include a sloping floor portion.
  • the hopper floor portion may slope upwardly from a normally forward portion to a normally rear portion. Alternatively or additionally the hopper floor portion may slope transversely.
  • the metering means may comprise a cover means movable between an open and a closed position to permit, in use, a selective flow of particulate material from said one or more container means to a screw auger.
  • the cover means may extend over the length of the conveyor means and may be raised or lowered to meter quantities of ingredients to the conveyor means via the gap between the cover means and the sloping portion of the hopper floor.
  • said cover may include an extension of perforated material which is pivotally hinged to said cover to prevent settling of said ingredient metered to said conveyor means.
  • the raising and lowering of the cover is controlled by hydraulic and/or pneumatic means.
  • the cover permits access to the conveyor means for maintenance or cleaning purposes without the need to unload said ingredients.
  • the metering means associated with said container for a liquid ingredient may comprise any suitable means for delivering a predetermined quantity of said liquid.
  • said liquid metering means comprises a liquid storage vessel with a dump valve means.
  • the one or more container means may include a container for a liquid ingredient of a mixture.
  • said liquid metering means may include a volumetrically controlled pump.
  • the metering means associated with a hopper for particulate material comprises a conveyor means.
  • the conveyor means comprises a screw auger.
  • conveyor belt, chain scraper or other means may be used.
  • the mixing means may comprise paddles, blades, fingers or like members associated with a rotatable shaft.
  • the dispensing means comprises a screw auger.
  • mixing means and dispensing means may be combined in the form of a screw auger having continuous or discontinuous flights.
  • mixing means and said dispensing means are co-axially rotatable, e.g. coaxial for selective operation by said common drive means.
  • drive means in the form of an electric or hydraulic motor or drive shaft from power take-off means may be used to rotate the mixing means and dispensing means within the hollow body or revolve the hollow body about a stationary mixing means and dispensing means.
  • said drive means is located adjacent said inlet opening of said hollow body and may comprise separate or common drive shafts.
  • the hollow body comprises an upper rigid section and a lower resilient wall portion.
  • said inlet opening is coverable and is located in an upper portion of said hollow body in the region of the mixing means to receive ingredients from said metering means.
  • said inlet opening may extend substantially along the upper portion of said hollow body.
  • said hollow body may include a detachable or telescopic chute extension, with or without a detachable dispensing auger locatable therein.
  • Said mixing means and said dispensing means may comprise a tapered helical ribbon blade supported on a rotatable shaft in a frusto-conical housing for relative rotation between said shaft and said housing, said housing having an inlet port and an outlet port.
  • the tapering ribbon-blade mixer extends the length of the hollow body.
  • the tapering ribbon-blade mixer is located within the hollow body so that there is a minimum clearance between the flights of said ribbon-blade mixer and the lower resilient section of the hollow body.
  • the ribbon blade may comprise a wear resistant material.
  • flights of said ribbon blade mixer may be lined or tipped with neoprene, polyurethane or other material permanently affixed by adhesive, mechanical or other suitable means.
  • said hollow body is pivotally attached to said pivot means about an upright and/or transverse pivotal axis.
  • the position and inclination of said hollow body between an elevated and a declined position may be controlled by fluid ram, mechanical or other means.
  • said track member may also extend longitudinally at one or both sides of said transport vehicle.
  • the mounting means may be extendably mounted to said vehicle. Retractable and extendable movement of said hollow body may be achieved by further mounting said pivot means to a telescopic extension member such as a scissors link device or other suitable arrangement.
  • the hollow body may be pivotally supported by a telescopic boom.
  • the telescopic boom may comprise a horizontal hydraulically or pneumatically operated telescopic member and a vertical member which may be pivotally mounted adjacent either corner of the rear of a delivery vehicle or mounted on a slidable mounting means which traverses the width of the rear or the lengths of the sides of a delivery vehicle.
  • the apparatus 1 is mounted on the chassis 2 of a transport vehicle 3.
  • the transport vehicle 3 is a 6.5 tonne GVM capacity vehicle although for the purposes of the following description, it should be understood that the apparatus may be scaled down to suit a smaller vehicle of say 1 tonne or it may be scaled up to suit vehicles of greater carrying capacity including articulated vehicles.
  • the advantages of the invention will be greatest in vehicles having a carrying capacity in the range from 1 to 6 tonnes due to their more compact construction and reduced headroom requirements.
  • Apparatus 1 comprises a centrally mounted hopper 4 with inwardly and downwardly sloping side walls 5. Located in a channel shaped floor portion 6, which slopes upwardly from near the front of hopper 4 to the rear thereof, is a screw auger 7
  • An hydraulic or electric drive motor 8 is provided forwardly of a sloping front hopper wall 9 and the rear end of the auger shaft is journalled in a housing 10 having a discharge opening 11.
  • a water tank 12 Extending on each side of the lower part of hopper 4 and below is a water tank 12. The base of water tank 12 rests upon and is connected to the chassis rails 2 of vehicle 3
  • a retractable canopy 13 is provided at the upper portion of hopper 4 and a platform region 4a is provided along each side of water tank 12.
  • a mixing and dispensing device 14 for mixing and selectively dispensing a mixture of ingredients.
  • device 14 comprises an open trough-like body 15 having a generally U-shaped cross section.
  • Body 15 is closed at one end by end wall 16 to which an electric or hydraulic drive motor 17 is mounted.
  • end wall 16 At the opposite end of body 15, the omission of an end wall creates an opening 18 for selective dispensing of a mixture.
  • Drive motor 17 powers a drive shaft 19 having mounted thereon a ribbon blade mixer 20 and a dispensing auger 21.
  • a ribbon blade mixer 20 and a dispensing auger 21 are shown as an assembly 22.
  • the free end (not shown) of shaft 19 is Journalled in a bearing (not shown) which is slidable along an upright axis on bracket 23.
  • bagged ingredients 24 of a mixture may be supported for transportation on platforms 4a if required.
  • Body 15 is pivoted about an upright axis on a bracket 25, bracket 25 in turn being slidably mounted on rails 26 for transverse movement from one side of apparatus 1 to the other.
  • a quantity of sand and aggregate, premixed in predetermined proportions is loaded into hopper 4 and water tank 12 is filled via a filler opening (not shown).
  • a quantity of bagged cement powder is loaded onto platforms 4a and vehicle 3 is driven to a site for delivery of site-mixed concrete.
  • control panel By means of a control panel (not shown) adjacent the rear end of vehicle 3, a predetermined quantity of sand aggregate mix is metered into body 15 by a controlled number of revolutions of screw auger 7.
  • the control panel may include a metering control for auger 7 calibrated in units equivalent to portions of a bag of cement powder eg. 1 ⁇ 4 bag, 1 ⁇ 2 bag etc.
  • the dry ingredients are mixed for a predetermined time by means of a timing device associated with the control panel.
  • the mixer controller apparatus (not shown) actuates a dump valve (not shown) in a cistern-like water holding tank (not shown) which had previously been filled to a predetermined level from water tank 12 by pump (not shown).
  • the assembly may be operated in a counter clockwise direction during a mixing cycle of predetermined duration.
  • the curved sweep of the ribbon blades confines the concrete mix towards the mixing region of body 15 and the innermost flight of auger 21 also assists in this regard.
  • the mixer controller After a mixing cycle of predetermined duration the mixer controller reverses the direction of rotation of the assembly 22 causing the concrete mix to be dispensed via opening 18 in body 15.
  • body 15 By mounting body 15 for pivotal movement about an upright axis on slidable bracket 25, body 15 is able to operate as a dispensing chute swingable through 180° and able to dispense the mix on either side of vehicle 3 at a distance equivalent to the length of body 15.
  • the apparatus described above is particularly suited to mixing and dispensing small quantities of concrete, either for small single batch usage applications or in situation where dispensing of small quantities of concrete over a prolonged period of time are concerned. Moreover, the compact dimensions of the apparatus are such that it is able to enter regions of reduced headroom otherwise denied to conventional mobile concrete mixers and/or dispensers.
  • the hopper 4 may be divided into two or more compartments, each with a respective material metering means such as a screw auger, conveyor belt, chain scraper or the like.
  • the apparatus may include a storage chamber for cement powder including aeration means and a metering device such as a paddle wheel dispenser or the like with an outlet chute in the region of the mixing portion of assembly 22.
  • a storage chamber for cement powder including aeration means and a metering device such as a paddle wheel dispenser or the like with an outlet chute in the region of the mixing portion of assembly 22.
  • the apparatus may include a water metering means such as a volumetrically controlled pump whereby each of the constituent metering means is controlled by a central control means to produce concrete of a specified strength and slump.
  • a water metering means such as a volumetrically controlled pump whereby each of the constituent metering means is controlled by a central control means to produce concrete of a specified strength and slump.
  • the mixing and dispensing body 15 may be mounted for selective inclination about a transverse axis to permit the discharge end to be raised or lowered as required.
  • Body 15 may also include a detachable or telescopic chute extension, with or without a detachable dispensing auger locatable therein for connection to the free end of assembly 22 for rotation therewith.
  • the mixing and dispensing assembly 22 may simply comprise a reversible screw auger with continuous or discontinuous flights at the mixing end.
  • the mixing portion and the dispensing portion may be mounted for relative coaxial rotation with a clutch mechanism or planetary gear assembly for selective individual rotation, co-rotation or counter rotation during respective mixing and/or dispensing cycles.
  • the body portion 15 may be positioned with its rear end located below the constituent feed outlets to achieve a continuous mixing and dispensing action if required as distinct from a batch process.
  • an alternative form of metering means may comprise a rigid cover 28 extending over the length of the screw auger 29.
  • the cover 28 has wing-like extensions 28a of steel mesh which are pivotally attached to cover 28 by pivotal connections 28b and 28c.
  • the cover 28 is attached at either end to vertically mounted fluid powered rams 30 and may be raised or lowered by independently or synchronously operating the fluid powered rams.
  • the resulting gap 31 between the cover 28 in the raised position as shown in phantom and the hopper floor 33 permits a controlled flow of particulate materials to the screw auger 29.
  • the quantity of ingredients can be metered by controlling the width of the gap 31 during operation of auger 29.
  • the lowermost region of the screw auger 29 is in close proximity to the hopper floor 33 which is fabricated of resilient flexible sheet material such as natural or synthetic rubber or elastomeric materials such as semi-rigid polyurethane.
  • the screw auger In use, after a predetermined quantity of particulate material is metered into the screw auger 29 via gap 31 and the cover 28 returned to its closed position, the screw auger conveys the entire quantity of particulate material to the mixer dispenser leaving the region between the cover 28 and the hopper floor 33 free of particulate material. Accordingly when the vehicle travels from site to site, compaction of the particulate material in the region of the screw auger 29 is prevented. Such compaction can lead to drive motor overload (and damage) or otherwise a substantially stronger motor would be required to drive the screw auger
  • cover 28 is that in the event that auger 29 requires maintenance, the auger screw can be removed from the base of the hopper without first having to manually empty the contents of the hopper.
  • the steel mesh wing-like extensions 28a serve in use to prevent uneven flow of particulate material from the hopper 4 to the auger 29. As cover 28 is raised to permit flow of particulate material to the auger 29 via gap 31, the pivoted wing-like extensions 28a are lifted thus disturbing the mass of particulate material thereabove to prevent localised bridging or compaction within the hopper 4
  • the auger cover 28 not only serves to prevent bridging of the particulate mixture in the hopper, it may be used to control the flow of material to the auger. Selective use of the cover 28 prevents the auger from flooding thereby permitting the use of a larger auger diameter, lower rotational speed, less powerful drive system and a less robust auger construction.
  • FIGS 5a, 5b and 5c respectively show a side elevation, top elevation and end elevation of an alternative aspect of the invention which comprises a combined mixing and dispensing apparatus including a body portion 34 having an upper portion 35 fabricated from rigid metal sheeting such as stainless steel and a lower portion 36 fabricated from flexible or resilient sheet material such as natural or synthetic rubber or elastomeric materials such as semi-rigid polyurethane.
  • a combined mixing and dispensing apparatus including a body portion 34 having an upper portion 35 fabricated from rigid metal sheeting such as stainless steel and a lower portion 36 fabricated from flexible or resilient sheet material such as natural or synthetic rubber or elastomeric materials such as semi-rigid polyurethane.
  • a coverable opening 37 to receive ingredients for mixing.
  • a tapered ribbon-blade mixer 38 Located within and extending the length of the body as indicated by the broken lines 38a in all views is the outline of a tapered ribbon-blade mixer 38 shown partially in FIG 5b.
  • the tapered ribbon-blade mixer 38 is located within the body so that there is a minimum clearance between the flights of the mixer blades and the lower flexible portion of the body 36.
  • a hydraulic motor 39 used to drive the ribbon-blade mixer.
  • brackets 40 which are attached to the body for pivotal mounting purposes.
  • the tapered ribbon-blade mixer 38 is comprised of a central shaft 38b to which are attached radial support members 38c to which support the ribbon-blade member 38d
  • the ribbon blade mixing/dispensing apparatus to one aspect of the invention differs from conventional ribbon blade mixers in that it is generally frusto-conical in shape with the discharge and located at its narrowest diameter.
  • Ribbon blade mixers generally sweep a cylindrical volume in a trough-like chamber having a semi-circular bottom portion. Although effective as mixers conventional ribbon mixers are poor materials conveyors and thus are not used for this purpose. A screw auger having solid flights is effective as a conveyor but is a poor mixer as it tends to convey a mass of material without subjecting it to any shear forces.
  • an efficient mixing function is achieved towards the larger end of the body with limited conveying whereas a more efficient conveying function is achieved towards the smaller open end of the body This is due to the smaller blade area when compared to the cross sectional area of the body towards the larger end which is better suited for the mixing function.
  • the conveying function is more efficient at the smaller open end of the body due to the relatively larger blade area when compared to the internal cross sectional area.
  • the helical blade of the tapered ribbon blade mixer has a relatively small surface area compared with a screw auger, its power requirements are considerably less.
  • the flight is manufactured from hardened steel or includes wear resistant wear faces.
  • the blade includes a wear resistant polymeric sheath such as an extruded polyurethane or synthetic rubber material which may be attached to the flight by an adhesive or the like.
  • the pivotal mounting means 43 for the apparatus of FIG 5a, 5b and 5c comprises a mounting member 44 to which a fluid powered ram 45 is attached.
  • brackets 47 which are pivotally attached along a transverse axis to the mounting member 44 by a high tensile steel bolt 49a and locknut 49b.
  • the fluid powered ram 45 is pivotally attached to the mounting member 44 at pivot points 48 by a high tensile steel bolt 48a and locknut 48b and to the body 46 by pin 49.
  • a hydraulic motor 50 which is used to drive the tapered ribbon-blade mixer 38.
  • an upright bearing housing 44a which permits the body 46 to pivot about an upright axis for positioning purposes when dispensing a mixture.
  • the housing 44a is mounted to a carriage member which is slidably mounted on tracks (not shown).
  • the extension of the fluid powered ram permits selective elevation and lowering of the body. Mixing of ingredients may be carried out in the elevated position and then dispensed as the body is lowered.
  • the apparatus may be mounted on retractable legs, a skip, trailer or the like to free a transport vehicle for other purposes.
  • the apparatus may include an integral power plant or a portable power plant for electric and/or hydraulic power.
  • the apparatus may be adapted for use with a variety of mixtures such as animal feedstuffs, seeded and fertilised top dressing mixtures for agricultural use, road base mixtures, bituminous or asphaltic road surfacing materials, explosives compositions such as ammonium nitrate/fuel oil mixtures and the like.
  • the metering and/or mixing and/or dispensing augers may be associated with flexible walls of rubber or plastics materials to avoid jamming in the event that an aggregate particle lodges between the edge of the auger flight and the auger wall.
  • the dispensing auger may include a tubular body at the dispensing end to facilitate pressurised dispensing or operation with the dispensing end of the auger in an elevated position.
  • the apparatus may comprise a rail assembly mounted transversely at the rear of a vehicle tray or tipper body with the mixing/dispensing apparatus pivotally attached to a carriage slidably mounted on the rail assembly.
  • Premixed sand and aggregate may be stored on the tray or in the tipper body in bulk or in containers together with containers for water and cement powder in bags or in bulk.
  • the ingredients of the mixture may be metered into a feed hopper associated with the mixing apparatus by suitable metering means or simply by a shovel or the like.
  • the mixing/dispensing apparatus may be mounted for slidable and pivotal movement transversely at the rear of a conventional concrete agitator bowl vehicle.
  • the agitator bowl may contain a dry mix of sand and aggregate or even a dry mix of sand, aggregate and cement powder.
  • cement powder and/or water is added to the mixing/dispensing apparatus for selective batch or continuous production of quantities of concrete.
  • the mounting means When mounted to a mobile apparatus the mounting means may comprise a telescopic linkage between the carriage and the mixer/dispenser to provide an even greater flexibility of use.
  • the transverse rail assembly which supports the slidable carriage may be mounted on extendable beam members slidably extending along opposite sides of the vehicle chassis or body.
  • the assembly of FIGS 1-3 may be adapted to facilitate removal of housing 10 by means of a quick coupling device and replacement thereof with a cement powder container
  • the cement powder container includes a metering device such as a paddle wheel dispenser operatively coupled to the electrical and/or hydraulic controls for the apparatus for accurate metering of cement powder with the sand/aggregate mix to the feed hopper of the mixing apparatus.
  • the apparatus is readily mountable on four or six wheel drive vehicles or a tracked vehicle for use in difficult site conditions and is particularly suitable for operation in remote areas beyond the operational limits of conventional ready mixed concrete delivery vehicles.
  • the apparatus is considered to be applicable to civil emergency and military use for, say, rapid repair of damaged roadways and concrete runaways using rapid setting cement, sand bag filling and the like.
  • relatively small craters which could otherwise render a roadway or runway unusable can be repaired and the roadway or runway restored to operational status within a very short period of time.
  • a particular advantage of the present invention over similar prior art batching and mixing apparatus is that it can be constructed simply and inexpensively yet with sufficient simple control mechanisms for consistent concrete quality even with unskilled operators. Unlike conventional agitator bowl concrete delivery vehicles which are "tied” to a "mother” batch plant and thus must return empty from each delivery trip, the apparatus according to the present invention is able to refill with sand/aggregate, cement powder and water at a variety of sources thereby improving operational efficiency.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Road Repair (AREA)
  • Accessories For Mixers (AREA)

Claims (15)

  1. Dispositif mobile pour mélanger et distribuer des ingrédients d'un mélange, ledit dispositif comprenant un véhicule de transport comportant
    un moyen de mélange pour mélanger des quantités prédéterminées desdits ingrédients dudit mélange ;
    un moyen de distribution pour distribuer sélectivement ledit mélange, ledit moyen de mélange et ledit moyen de distribution étant situés dans un corps creux avec une ouverture d'admission adjacente audit moyen de mélange et une ouverture de sortie adjacente à une extrémité dudit moyen de distribution ;
    un moyen d'entraínement couplé opérationnellement auxdits moyens de mélange et de distribution ; et
    un moyen de montage pour ledit corps contenant lesdits moyens de mélange et de distribution ;
       caractérisé par ledit moyen de montage comprenant un élément de glissière de guidage s'étendant transversalement audit véhicule, un élément de chariot monté de manière coulissante sur ledit élément de glissière de guidage et un moyen pivot pour la fixation pivotante dudit corps creux audit moyen de chariot.
  2. Dispositif mobile selon la revendication 1, ayant un ou plusieurs moyens de récipients pour contenir des ingrédients d'un mélange ; et
       un moyen de mesure associé auxdits un ou plusieurs moyens de récipients.
  3. Dispositif mobile selon la revendication 2, dans lequel lesdits un ou plusieurs moyens de récipients comportent une trémie pour une matière particulaire.
  4. Dispositif mobile selon la revendication 2 ou 3, dans lequel lesdits un ou plusieurs moyens de récipients comportent en outre un récipient de liquide pour un ingrédient liquide d'un mélange.
  5. Dispositif mobile selon l'une quelconque des revendications 2 à 4, dans lequel ledit moyen de mesure comprend une tarière rubanée.
  6. Dispositif mobile selon la revendication 5, dans lequel ledit moyen de mesure comprend un moyen de couvercle pouvant se déplacer entre une position ouverte et une position fermée afin de permettre, lors de l'utilisation, un flux sélectif de matière particulaire depuis lesdits un ou plusieurs moyens de récipients jusqu'à ladite tarière rubanée.
  7. Dispositif mobile selon l'une quelconque des revendications précédentes, dans lequel ledit moyen de mélange et ledit moyen de distribution peuvent tourner dans le même axe.
  8. Dispositif mobile selon l'une quelconque des revendications précédentes, dans lequel ledit élément de glissière de guidage s'étend aussi longitudinalement au niveau de l'un ou des deux côtés d'un véhicule de transport.
  9. Dispositif mobile selon l'une quelconque des revendications précédentes, dans lequel ledit moyen de montage est monté d'une manière extensible sur ledit véhicule.
  10. Dispositif mobile selon l'une quelconque des revendications précédentes, dans lequel ledit moyen de mélange et ledit moyen de distribution comprennent :
    une lame-ruban hélicoïdale conique supportée sur un arbre rotatif dans un logement tronconique en vue d'une rotation relative entre ledit arbre et ledit logement, ledit logement ayant un orifice d'admission et un orifice de sortie.
  11. Dispositif mobile selon la revendication 10, dans lequel ledit orifice d'admission est adjacent à une extrémité de diamètre supérieur dudit logement et ledit orifice de sortie est adjacent à une extrémité de diamètre inférieur dudit logement.
  12. Dispositif mobile selon la revendication 10 ou la revendication 11, dans lequel ledit logement comprend une partie de paroi élastique inférieure.
  13. Dispositif mobile selon l'une quelconque des revendications 10 à 12, dans lequel ladite lame-ruban comprend une matière résistante à l'usure.
  14. Dispositif mobile selon l'une quelconque des revendications 10 à 13, dans lequel ladite lame-ruban comprend une gaine amovible de matière polymère résistante à l'usure souple.
  15. Dispositif mobile selon l'une quelconque des revendications 10 à 14, dans lequel un moyen d'entraínement est associé audit arbre adjacent audit orifice d'admission.
EP95936886A 1994-11-24 1995-11-24 Dispositif mobile melangeur et distributeur a beton Expired - Lifetime EP0809563B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPM9631/94 1994-11-24
AUPM9631A AUPM963194A0 (en) 1994-11-24 1994-11-24 Mobile concrete mixer
AUPM963194 1994-11-24
PCT/AU1995/000778 WO1996015889A1 (fr) 1994-11-24 1995-11-24 Dispositif mobile melangeur et distributeur a beton

Publications (3)

Publication Number Publication Date
EP0809563A1 EP0809563A1 (fr) 1997-12-03
EP0809563A4 EP0809563A4 (fr) 1999-08-25
EP0809563B1 true EP0809563B1 (fr) 2002-10-09

Family

ID=3784141

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95936886A Expired - Lifetime EP0809563B1 (fr) 1994-11-24 1995-11-24 Dispositif mobile melangeur et distributeur a beton

Country Status (9)

Country Link
US (1) US6007233A (fr)
EP (1) EP0809563B1 (fr)
AT (1) ATE225700T1 (fr)
AU (1) AUPM963194A0 (fr)
DE (1) DE69528537T2 (fr)
IN (1) IN187253B (fr)
MY (1) MY124291A (fr)
TW (1) TW304922B (fr)
WO (1) WO1996015889A1 (fr)

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AUPR521401A0 (en) * 2001-05-23 2001-06-14 Stephens, Anthony Leon A mobile dry to wet concrete system
US7438461B2 (en) * 2004-01-29 2008-10-21 E.I. Du Pont De Nemours And Company Bulk transport system
ITVI20040226A1 (it) * 2004-09-24 2004-12-24 Peron Srl Unipersonale Dispositivo e macchina per lo stoccaggio e o il trasporto di un prodotto per la realizzazione di sottofondi per pavimentazione
GB0711423D0 (en) 2007-06-13 2007-07-25 Jones Graham A Compact concrete mixer
US20090229706A1 (en) * 2008-03-13 2009-09-17 Trevor Royce Funnel-Type Apparatus Removably Securable to a Concrete Chute
US8336585B2 (en) * 2008-03-13 2012-12-25 Royce Innovations, Llc Concrete funnel and placement system
WO2010007474A1 (fr) * 2008-07-18 2010-01-21 Roberto Prada Centrale à béton mobile et mélangeur
MX2011004408A (es) * 2008-11-03 2011-09-29 Daniel A Doron Sistema de remolque mezclador horizontal.
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EP2446087B1 (fr) 2009-06-24 2019-03-13 Basf Se Procédé de production d'un matériau composite mettant en oeuvre un système de mélange
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EP2658818B1 (fr) 2010-12-29 2021-05-19 Soiltec GmbH Structure de trottoir à base d'un composite coloré
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US10053953B2 (en) 2015-03-21 2018-08-21 Baker Hughes, A Ge Company, Llc System, apparatus and methods for blending cement
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Also Published As

Publication number Publication date
ATE225700T1 (de) 2002-10-15
AUPM963194A0 (en) 1994-12-15
MY124291A (en) 2006-06-30
TW304922B (fr) 1997-05-11
EP0809563A1 (fr) 1997-12-03
DE69528537D1 (de) 2002-11-14
WO1996015889A1 (fr) 1996-05-30
IN187253B (fr) 2002-03-09
DE69528537T2 (de) 2003-05-15
US6007233A (en) 1999-12-28
EP0809563A4 (fr) 1999-08-25

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